Feed-water heater



(No Model.)

D. STARK.

lEEED. WATEE EEATEE.

Patented 111118,19, 1888.

l InUemnr:

2 flugs.

n. Puras, Pmumugwhur. walmngum n UNITED STATES PATENT OEEIc DAVID'STABK,OF SAN FRANCISCO, CALIFORNIA.

FEED-WATER HEATER.

SPECIFICATON forming part of Letters Patent No. 384,937, dated .Tune 19,1888.

Serial No. 939,904. (No model.)

To a/ZZ whom it may concern:

Be it known that I, DAVID STARK, a snbject of the Queen of GreatBritain, residing at San Francisco, in the county of San Francisco andState of California, have invented certain new and useful Improvementsin Feed-rater Heaters and Purifiers for Steam-Boilers, of which thefollowing is a specification.

My invention relates especially to that class of water heaters andpuriers in which the water is heated and purified before entering theboiler, and has for its object the production of a means whereby thewater is heated to a high degree of heat, under pressure directly fromthe waterlmain, without passing through intermediate machineryof theboiler and becoming impregnated with oleaginous matter, so incident tothe lubrication ot' such mechanisms.

To attain this end my invention consists in the construction,arrangement, and combination of parts, substantially as will behereinafter described and claimed.

The Iigure represented by the accompanying drawing is in verticalsection taken through filtering-chamber and steam-jacket.

A represents the outer or steam jacket pron vided with the inlet pipeand port B, connecting with the exhaust of the boiler, and B the escapeor outlet pipe or port, through which the steam, after passing throughthe jacket, escapes into the open air. `W'ithin the jacket is placed thefiltering-chamber, suitably supported by the angle-braces C and thelower end bolted to the base -plate of the steamjacket, as shown. Thefiltering material of this chamber, which may be composed of brokenstone cobbl es, pebbles, or bricks or other matter, is supported upon aperforated plate, D, and occupies about one-half ofthe space of thecylinder, and so that a chamber or open space, E, is left above thefiltering substance. Sufficient spaceis also left above thelteringcylinder within the steam-jacket to receive the waterheating coilF, which latter is constructed of copper. As it becomes necessary inpractice to heat the water quickly as it passes th rough the coil intothe filtering-chamber, I construct my coil of copper, this metal beingmore sensitive to heat than iron. The lower end of this coil is coupledto the top plate of the filteringcylinder and passes into collector orsettler H2, which deiiects or con` ducts the sediment thrown down fromthe liltering-chamber below and into the settler, leaving the water tobe drawn off from the chamber H through the feed-water pipe J, at therear or back of the inclinedplate above the sediment deposit, in acomparatively pure condition. A suitable draw-off cock and pipe, I,connects with this chamber H2 for drawing oft all sediment that passesdown through the filtering material upon the inclined plates.

The hot-water chamber is tapped just below the upper end of the inclinedplate to receive a feed-water pipe, J, which extends through the shellof the steam-jacket and connects with the steam-boiler to be suppliedwith the hot and purified water which is drawn off above the collectedsediment. ever, extend upabove the pressure-gage, as shown by dottedlines J X, as the filtering-chamber is always under pressure.

Suitable man-holes, K K KX KX, are pro-` vided in both the steam-jacketand filtering cylinder for removing or cleansing the iltering substance,and a draw-ol cock, L, connects with the steam-jacket, through which todraw off the water of condensation.

In operation cold water from a water main or tank is admitted to thecopper coil within the steam-jacket through t-he upper feedwater pipe,and exhauststeam from the steam-boiler is received upon the coil throughthe medium of the pipe B, which quickly heats the water` as it passesthrough the copper coil into the filtering-chamber, where theimpuri-tiesare filtered from the water. lf any sediment fails of being collected bythe filtering material, it will vpass down into the lower chamber o'rsettler at the bottom of the lteriugcylinder,

This pipe may, howroo leaving the hot water pure and deprived of allforeign substances, to be drawn off into the boiler for use in makingsteam in a rapid manner. It should here be observed that, theoutlet-pipe B being of the same diameter as that of the inlet-exhaustpipe, no undue pressure will be exerted upon the shell of thesteamjacket. By this construction it will be seen that I am enabled tosupply boilers with pure heated Water free from oily matter and Withoutthe necessity of passing the hot Water through pumps, by which operationthe valves of these pumps so employed soon become greatly impaired andnecessitate constant attention or renewal.

Having thus described my invention, WhatI claim, and desire to secure byLetters Patent,

l. An apparatus for heating and purifying feed-Water, consisting of aninner filtering-cylinder under pressure and an outer shell orsteam-jacket provided with a copper heating coil leading` from thesupply-pipe orv cold-Water main into the head of the filtering-cylinderand adapted to discharge hot or heated Water upon the filtering materialwhen heated by exhaust-steam admitted to the outer shell orsteam-jacket, the hot-Water chamber provided with the deflecting-plateHX, and the funnelshaped mouth H2, as set forth.

2. The feed-water heater and purifier herein described, consisting in aninner cylinder under pressure, provided with an upper chamber andsuperposed Iiltering material, in combination with an outer shell orsteam-jacket having inlet and outlet ports or pipes and a Water-heatingcoil therein, through which Water heated by the exhaust-steam from aboiler passes into the filtering-chamber, the hot-wa ter chamber locatedbelow the filtering-chamber and provided with the dellecting-plate IIX,

and the funnelshaped mouth H2, all arranged as set forth.

3. In a feed-water heater and purifier, the Y combination, with thefiltering chamber, steanijacket surrounding the same, and heating-coilabove, of the hot-water or drawoff chamber ofthe dellecting orsedimentconducting plate HX, as and for the purpose specified.

4. In a feedwater heater and purilier, the combination, with the innerfiltering and purifying chamber or cylinder and outer shell orsteam-jacket, of the man-holes K K KX KX, for the purpose of removing,cleansing, andV replacing the liltering material, as specified.

-In testimony that I claim the foregoing I have hereunto set my hand andseal.

DAVID s'rARK. [L s] W'itnesses:

C. XV. M. Siii'rrr, GHAs. E. KELLY.

